Advent Concludes Largest Client Conference Ever

Advent Concludes Largest Client Conference Ever

Advent Concludes Largest Client Conference Ever

San Francisco, Sept. 20, 2006 – Advent Software, Inc. (NASDAQ:ADVS), the leading provider of software and services to the investment management industry, recently concluded its most successful client conference ever. The Advent Client Conference 2006, held in Washington, D.C. from September 13-15, was attended by nearly 1,000 Advent clients, partners and employees from 42 states and 15 countries.

A key milestone at the conference was the one year anniversary of Advent Portfolio Exchange®, the company’s next-generation portfolio accounting and reporting platform.

“Client feedback at our recent conference overwhelmingly confirmed Advent’s product strategy is on target and we are serving our clients well,” Stephanie DiMarco, Chief Executive Officer. “Advent Portfolio Exchange® is our most important product launch since we introduced Geneva® more than 10 years ago. Over 50 firms have purchased APX and we are seeing growing interest in APX from the many investment firms who will benefit from the APX feature set and platform. The sheer number of attendees at the Conference is a leading indicator of the momentum we are seeing at Advent right now.”

The 2006 Advent Conference featured 121 client sessions including industry sessions with speakers from the Securities and Exchange Commission (SEC) and leading investment management companies on compliance issues; educational sessions with tips on migrating from Axys® to Advent Portfolio Exchange® and getting the most from all of Advent’s products; Hands-on Labs for Advent’s Geneva® clients and client panels on topics including the latest electronic trading strategies and major trends in asset management.

Advent marked a number of major milestones at the 2006 Advent User Conference such as:

Over 700 clients using Moxy® as their trade-order management system.

Over 2500 clients using the Advent Custodial Data (ACD) to streamline their reconciliation process through a single connection to over 400 custodian interfaces.

Over 200 clients using Advent Corporate Actions service to receive timely, complete analysis and transaction-level detail on mergers, reorganizations, spin-offs, name changes and other corporate actions.

Below are some of the comments shared by Advent clients at the Advent 2006 User Conference:

“This was our second Advent Conference and the best yet!” said Joan Kehoe, Chief Executive Officer, Quintillion. “The Advent Conference is attended by all of the leading firms in the alternative investing space and an excellent opportunity for us to keep up on critical market trends and new ways to use Geneva® to make our company efficient and profitable.”

“This was the fourteenth year NewSouth Capital Management has attended the Advent Client Conference,” said Andrew MacQueen, Vice President, NewSouth Capital Management, Inc. “We found the Advent User Group sessions to be an excellent experience and opportunity to speak with other Advent clients. It was also useful for us to connect with Advent product managers and hear about future plans for Axys®, Moxy®, Advent Portfolio Exchange® and Qube®.”

“The 2006 Advent Conference was a great opportunity to network with other leading companies in our industry and share best practices for compliance testing and back office operations,” said June George, Director of Operations, Knott Capital. “Knott Capital uses Advent’s Axys®, Moxy® and ACD and is a member of the Advent Users Group, which held a number of sessions at the Conference. We have many of the same daily tasks as other Advent clients, and the Conference provides an ideal forum to speak to other users about the best ways to achieve operational efficiency.”

"The trip from Switzerland to attend the 2006 Advent Conference in Washington, D.C. was well worth it," said Jarl Hjärre, Chief Operating Officer of Phanar Asset Management in Zurich, Switzerland. "We implemented Advent Portfolio Exchange® three months ago and are very pleased with the results. Its’ capabilities are living up to our high expectations, and the product will help us improve our operational efficiency significantly. We needed a platform for growth - now we have it! The conference was also a good chance to meet industry peers and other APX clients, and naturally to further reinforce our already good relationship with Advent."

“We are celebrating our one year anniversary on APX,” said Cathy Sawyer, Director of Operations, Sterling Capital Management. “It is exciting to see the development of the product and improvements even in that short time. Our portfolio managers have commented on the blazing speed of APX 1.5.”

“We chose Advent because of their excellent support,” said Joe Rivera, Director of Operations, Newgate Capital Management LLC. “We saw a demo of APX and were impressed to have all of the CRM functions in one place.”

“The Colony Group has been an Advent client and attended the Advent Conference for many years,” said Ann Murphy, Director of Investment Operations, The Colony Group, LLC. “The Colony Group uses Advent’s Moxy®, Axys®, Qube® and ACD for trade order management and portfolio accounting and the Conference is always a strong opportunity for us to network with peers, validate best practices and get in-depth technical assistance from Advent’s knowledgeable team.”

“Optimum Investment Advisors has attended seven Advent Conferences and this was the most entertaining and informative to date,” said Michelle Katauskas, Director of Operations, Optimum Investment Advisors. “We gained valuable industry knowledge from our peers and also picked up tips in the educational sessions on day-to-day operational tasks like structuring client reports.”

“Moxy® is a great product,” said John Nuzzo, Vice President and Head Trader, Anchor Capital Advisors LLC. “It has transformed the way we operate. And with all the continuing changes in electronic trading, we think development of future Moxy® versions is going in the right direction.”
ABOUT ADVENT
Advent Software, Inc. (www.advent.com), a multi-national company, has been providing trusted solutions to the world's leading financial professionals since 1983. Firms in more than 60 countries are using Advent technology to manage investments totaling more than US $12 trillion. Advent's quality software, data and services enable financial professionals to improve service and communication to their clients, helping them grow their business while controlling costs. Advent is the only financial services company to be awarded the Support Center Practices certification for being a world-class support organization.

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Advent, Advent Portfolio Exchange, Axys, Geneva, Moxy and Qube are registered trademarks of Advent Software, Inc. All other company names or marks mentioned herein are those of their respective owners.

FORWARD LOOKING STATEMENTS
Any forward looking statements included in this press release involve risks and uncertainties that could cause actual results to differ materially from our expectations. These risks and uncertainties include market acceptance of new products, the impact of initiatives by competitors, and other risks detailed in Advent’s filings with the Securities and Exchange Commission, including, but not limited to, its annual report on Form 10-K and quarterly reports on Form 10-Q, as amended, copies of which may be obtained by contacting Advent Software at 415-645-1787, or by visiting Advent’s Investor Relations website at www.advent.com.
Contact:Jane Rauckhorst, Advent Software, Inc.
(415) 645-1893jrauckho@advent.com